12And the LORD spoke to you out of the fire. You heard the sound of the words, but saw no form; there was only a voice.
13He declared to you His covenant, which He commanded you to follow — the Ten Commandments that He wrote on two tablets of stone.
14At that time the LORD commanded me to teach you the statutes and ordinances you are to follow in the land that you are crossing the Jordan to possess.
15So since you saw no form of any kind on the day the LORD spoke to you out of the fire at Horeb, be careful
— Deuteronomy 4:12-15